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From vishal3007 <VISHAL3...@GMAIL.COM>
Subject Artemis: Memory leak while shutting down the tomcat server with embedded JMS server
Date Sun, 05 Mar 2017 12:08:29 GMT
I am using Artemis server as an embedded server in my webapp.
The Embedded server is started as spring-bean as explained in the Spring
Integration examples provided by Artemis.
When tomcat server is shut down following warning comes in console:

Mar 05, 2017 5:41:09 PM org.apache.catalina.core.StandardServer await
INFO: A valid shutdown command was received via the shutdown port. Stopping
the Server instance.
Mar 05, 2017 5:41:09 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["http-nio-8080"]
Mar 05, 2017 5:41:09 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["ajp-nio-8009"]
Mar 05, 2017 5:41:09 PM org.apache.catalina.core.StandardService
stopInternal
INFO: Stopping service Catalina
Mar 05, 2017 5:41:10 PM
org.springframework.context.support.ClassPathXmlApplicationContext doClose
INFO: Closing
org.springframework.context.support.ClassPathXmlApplicationContext@7feef2a0:
startup date [Sun Mar 05 17:40:40 IST 2017]; root of context hierarchy
Mar 05, 2017 5:41:10 PM
org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl stop
INFO: AMQ221002: Apache ActiveMQ Artemis Message Broker version 1.5.3
[59915ee6-019a-11e7-a49a-005056c00008] stopped, uptime 29.048 seconds
Mar 05, 2017 5:41:10 PM org.apache.catalina.loader.WebappClassLoaderBase
clearReferencesThreads
WARNING: The web application [Spring4MVCHelloWorldRestServiceDemo] appears
to have started a thread named [threadDeathWatcher-1-1] but has failed to
stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.lang.Thread.sleep(Native Method)
 io.netty.util.ThreadDeathWatcher$Watcher.run(ThreadDeathWatcher.java:150)

io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
 java.lang.Thread.run(Thread.java:745)
Mar 05, 2017 5:41:10 PM org.apache.catalina.loader.WebappClassLoaderBase
clearReferencesThreads
WARNING: The web application [Spring4MVCHelloWorldRestServiceDemo] appears
to have started a thread named [Thread-0
(ActiveMQ-client-global-threads-1227208364)] but has failed to stop it. This
is very likely to create a memory leak. Stack trace of thread:
 sun.misc.Unsafe.park(Native Method)
 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)

java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)

java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 java.lang.Thread.run(Thread.java:745)
Mar 05, 2017 5:41:10 PM org.apache.catalina.loader.WebappClassLoaderBase
checkThreadLocalMapForLeaks
SEVERE: The web application [Spring4MVCHelloWorldRestServiceDemo] created a
ThreadLocal with key of type [java.lang.ThreadLocal] (value
[java.lang.ThreadLocal@198498b3]) and a value of type
[io.netty.util.internal.InternalThreadLocalMap] (value
[io.netty.util.internal.InternalThreadLocalMap@357b809a]) but failed to
remove it when the web application was stopped. Threads are going to be
renewed over time to try and avoid a probable memory leak.
Mar 05, 2017 5:41:10 PM org.apache.catalina.loader.WebappClassLoaderBase
checkThreadLocalMapForLeaks
SEVERE: The web application [Spring4MVCHelloWorldRestServiceDemo] created a
ThreadLocal with key of type [java.lang.ThreadLocal] (value
[java.lang.ThreadLocal@198498b3]) and a value of type
[io.netty.util.internal.InternalThreadLocalMap] (value
[io.netty.util.internal.InternalThreadLocalMap@26e9b16a]) but failed to
remove it when the web application was stopped. Threads are going to be
renewed over time to try and avoid a probable memory leak.
Mar 05, 2017 5:41:10 PM org.apache.coyote.AbstractProtocol stop
INFO: Stopping ProtocolHandler ["http-nio-8080"]
Mar 05, 2017 5:41:10 PM org.apache.coyote.AbstractProtocol stop
INFO: Stopping ProtocolHandler ["ajp-nio-8009"]
Mar 05, 2017 5:41:10 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["http-nio-8080"]
Mar 05, 2017 5:41:10 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["ajp-nio-8009"]




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